Of course, hiring a Freelance Designer (or employing one in-house) makes it more likely your graphics will be consistent. And also of high-quality. Alternatively, you could pay a visual content service such as Visually, which brings added marketing context to their work.
Website Graphics Design and Development is the norm of the 21st Century. Whereas, according to the Social Science Research Network, 65 percent of the population are visual learners. Which means that they heavily rely on images and videos gestures to do their heavy lifting when it comes to online information gathering.